Montana Code Annotated — Title 15 (Taxation)
Mont. Code Ann. § 15-6-101 — Property Subject To Taxation -- Classification
15-6-101 . Property subject to taxation -- classification. (1) All property in this state is subject to taxation, except as provided otherwise.
(2) For the purpose of taxation, the taxable property in the state shall be classified in accordance with this part.
Source: official text